[Coco] Bad news, good news...

Roger Merchberger zmerch at 30below.com
Wed Dec 14 12:38:47 EST 2005

Rumor has it that John Kowalski may have mentioned these words:
>At 11:02 AM 14/12/2005 -0500, CoCoList for Color Computer Enthusiasts wrote:
> >John
> >
> >How are you weighting the RGB signals when mixing?
> >
> >If using op amps which ones?
> >
> >james
>Hi James,
>I know I should have, but it was just a quick thing I put together - red,
>green and blue all get the same weight.  You can see in the photo that green
>appears slightly darker and blue slightly lighter than in the RGB
>screenshot.  I can try replacing the resistors and taking another photo of a
>more accurate S-video conversion.

Why replace, when one could adjust? How hard would it be to replace the 
resistors with pots? Then you could adjust the colors weights to individual 

>The circuit is dirt simple, just some resistors and a 3904 transistor.

I don't exactly have a "big" parts bin, but I'm sure I could scrape up a 
3904 or two... ;-)

Roger "Merch" Merchberger

Roger "Merch" Merchberger   | Anarchy doesn't scale well. -- Me
zmerch at 30below.com.         |
SysAdmin, Iceberg Computers

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